Check blower motor fuse
Check to see if blower motor is getting power
The relay is bad.
Either the electrical flow between the battery and the switch is faulty or the connection between the switch and the blower is faulty. Could be an inline fuse.
I just replaced the front heater motor in my 99 Suburban, it worked great, now the heater/ac absolutely does nothing. Could the switch be bad, the motor, I am stumped and need help. Thanks Jim.
If you are talking about a wall switch for the heater, check to see if the heater has its own internal thermostat or switch as this might be in the off position and not allow the heater to turn on. If you are talking about a switch on the heater itself, then yes in all probability the switch is not working.
I have the same problem. what I do is tap on the heater blower (located below the glove compartment in the corner)which will magically make the fan work or remove the two gold Philip screws that hold the cover and spin the fan manually.
Where is heater control switch
Nothing.
When you turn on the heater switch does nothing at all happen ? This coule be because the heater swith cable that goes to the water pipes and turns a switch to allow war water to flow has snapped, an easy fix is to find this switch (Should be around the back of the engine or on the bulkhead) and switch it so it is on allow hot water flow all the time when warmet weather comes switch it back to allow air con/ cold air.
Where is the heater relay switch on a 2005 MalibuRead more: Where_is_the_heater_relay_switc
Nothing of any consequece happens at all except that you now insured by a different company.
IT turns the heater on and off!
First guess; the battery is dead. Second; a break in the ignition switch wiring. NOTHING happens? No noise, no clicks, NOTHING? Check to see if the ceiling light comes on when you open the door.